Coaxial cable is often used to transmit cable television into a residence.

Cable television is a system of providing television programs to consumers via radio frequency (RF) signals transmitted to televisions through coaxial cables or digital light pulses through fixed optical fibers located on the subscriber's property. This can be compared to over-the-air method used in traditional broadcast television (via radio waves) in which a television antenna is required. FM radio programming, high-speed Internet, telephony, and similar non-television services may also be provided through cable television.

History[link]

Most American television sets are cable-ready and have a cable television tuner capable of receiving cable TV already built-in that is delivered as an analog signal (UK televisions are set up to receive Freeview digital terrestrial broadcasting). To obtain premium television most televisions require a set top box called a cable converter that processes digital signals. The majority of basic cable channels can be received without a converter or digital television adapter that the cable companies usually charge for, by connecting the copper wire with the F connector to the Ant In that is located on the back of the television set.

The abbreviation CATV is often used to mean "Cable TV". It originally stood for Community Access Television or Community Antenna Television, from cable television's origins in 1948: in areas where Over-the-air reception was limited by distance from transmitters or mountainous terrain, large "community antennas" were constructed, and cable was run from them to individual homes. The origins of cable broadcasting are even older as radio programming was distributed by cable in some European cities as far back as 1924.

Cable television deployments[link]

It is mostly available in North America, Europe, Australia and East Asia, and less so in South America and the Middle East. Cable TV has had little success in Africa, as it is not cost-effective to lay cables in sparsely populated areas. So-called "wireless cable" or microwave-based systems are used instead.

Asia and Australia[link]

Philippines[link]

“NUVUE”, the first cable television system, was set up in Baguio City spearheaded by American expatriate Russel Swartley in 1969. Popularity of CATV started in the 1980s after the Marcos administration. Cable giant SkyCable started in 1992. Cable providers have grown, and these some examples are Global Destiny, Cablelink, and some regional cable providers. In 2007, SkyCable introduced the DigiBox, a cable TV set top box that provides a digital television (Digital television) (DTV) signal for higher video quality and prevents illegal cable TV connections. In 2008, SkyCable also broadcast the 37th Ryder Cup in High-definition television (HDTV). In 2009, SkyCable became the first cable TV service provider in the Philippines to broadcast the UAAP Games in HDTV via the new SkyHD Cable TV service.

Mongolia[link]

There are several cable TV providers in Mongolia. The main three are "SuperVision", "Hiimori" and "Sansar CATV". All three cover approximately 15 national channels and 40 foreign channels, such as CNN, BBC, and NHK. "Sansar" has biggest network in Ulaanbaatar. SuperVision is the first digital cable television in Mongolia and other CATVs are planning to launch digital cable television with CA systems.

Turkey[link]

In Turkey, there is a Satellate and Cable TV provider. Türksat A.Ş. 1990's Cable TV Started in eight cities. İstanbul, Ankara, İzmir, Adana, Bursa, Konya, Kayseri, Gaziantep. 2011's in 21 city. There are 4 main services: Cable TV, wide band Internet, Digital TV, and VOIP.

Maldives[link]

There are only two cable TV operators in the country.^{[citation needed]} As the population of the Maldives is separated across around 200 inhabited islands, there is a cable TV operator for nearly every island. MediaNet Pvt. Ltd. is the country's largest cable TV operator ,providing state of the art digital service, . MediaNet is a Male-based cable TV operator that provides cable and Multichannel Multipoint Distribution Service (MMDS) service to five islands near Male. MediaNet holds a distribution license for 75 channels and distributes channels to nearly all the operators of the country. In Maldives, cable TV subscribers can get most premium channels available in Asia.

All channels are required to obtain an exhibition license from Department of Information after each channel is classified at National Bureau of Classification (NBC)^[1] NBC gives the highest classification for every channel after contents of each channel are examined for a week. Cable TV classification ratings are as follows:

• G - General viewing for all ages.
• PG - Parental Guidance is required.
• 12+ - For viewers aged 12 and above.
• 15+ - For viewers aged 15 and above.
• 18+ - For viewers aged 18 and above.
• 18+R - For viewers aged 18 and above.

Channels with an 18+R classification rating contain content that may affect an individual directly or indirectly. Viewer discretion is advised.

Australia[link]

Cable television began in the early 1990s in Australia. Several companies appeared including FOXTEL, Galaxy TV, OPTUS TV, Selectv and Austar offering services to homes across the major states of Australia. Services to Tasmania and the Northern Territory took longer to start, not until the mid 2000's when the digital satellite pay television service had picked up momentum and was beginning to be used for metropolitan installs and not just rural installs.

FOXTEL dominates the cable television landscape and is now rebroadcast by Austar (in rural areas) and formerly OPTUS TV, until the latter ceased broadcasting in 2011. Galaxy TV and Selectv likewise no longer operate. The effective FOXTEL monopoly has drawn criticism within Australia for being anti-competitive and inflating prices.

Latin America[link]

Panama[link]

Panamanian company Rexa started Cable TV deployment in 1983 to Panama City. In other regions they also had local cable companies. Rexa's successor, Cableonda, was dominant throughout the 1990s, and expanded to Chiriqui Province. Since 2000Actually the most important are: Cable Onda (40% share), Cable and Wireless (started on late 2009) and CTV.^{[citation needed]}

Dominican Republic[link]

Cable television in the Dominican Republic is provided by a variety of companies. These companies offer both English- and Spanish-language television, plus a range of channels in other languages, high definition channels, pay-per-view movies and events, sports packages and premium movie channels such as HBO, Playboy TV, Cinecanal, etc. Also, the channels are from not only the Dominican Republic, but also the United States and Europe. In the Dominican Republic television spectrum, there are 46 VHF, UHF, and free-to-air (FTA) channels. The free of charge channels programming consists mainly of locally produced entertainment shows, news, and comedy shows; and foreign sit-coms, soap operas, movies, cartoons, and sports programs.

The main service provider in the Dominican Republic is Telecable from Tricom. Aster is concentrated in Santo Domingo, but is expanding its service throughout the Dominican Republic. There are also new companies using new technologies that are expanding quickly such as Claro TV (IPTV), Wind Telecom (MMDS) and SKY (Satellite TV).

Europe[link]

Ireland[link]

Cable television is the most common^{[citation needed]} system for distributing multi-channel television in Ireland. With more than 40 year of history and extensive networks of both wired and "wireless" cable, Ireland is amongst the most cabled countries in Europe. Forty percent^[2] of Irish homes received cable television in September 2006. The figure dropped slightly in the early years of the 21st century due to the increased popularity of satellite reception, notably Sky, but has stabilized recently.

In the Republic of Ireland, UPC Ireland is by far the largest cable and MMDS operator, owning all of the state's MMDS licenses and almost all of the state's cable TV operators. UPC offers analogue and digital cable television services in cities and towns throughout the country (with the exception of Cork, where the network is digital-only). It offers MMDS services in rural areas. In areas previously served by NTL, the network is digital-only, while Chorus areas still have both analogue and digital services. Other than UPC, the only other operator providing analogue and digital cable is Casey Cablevision, which operates in Dungarvan, County Waterford. There also exists a small number of analogue-only cable networks such as the Longford service Crossan Cable.

United Kingdom[link]

When the infant BBC Television service was started in 1936, Rediffusion, which had supplied cable radio services since 1928, started providing "Pipe TV" to its customers who had difficulties tuning into the weak TV broadcast signal.^[3]

Suspended during World War II, the BBC service was re-established in June 1946, and had only one transmitter, at Alexandra Palace, which served the London area. From the end of 1949, new transmitters were steadily opened to serve other major conurbations, and then smaller areas of population. The areas on the fringes of the transmitter coverage provided an opportunity for Rediffusion and other commercial companies to expand cable systems to enlarge the viewing audience for the one BBC television channel which then existed. The first was in Gloucester in 1950^[4] and the process gathered pace over the next few years, especially after a second television channel, ITV, was launched in 1955 to compete with BBC. By the late 1970s, two and a half million British homes received their television service via cable.^[5]

By law, these cable systems were restricted to the relay of the public broadcast channels, which meant that as the transmitter network became more comprehensive, the incentive to subscribe to cable was reduced and they began to lose customers. In 1982, a radical liberalization of the law on cable was proposed by the Information Technology Advisory Panel,^[6] for the sake of promoting a new generation of broadband cable systems leading to the wired society^[7] After setting up and receiving the conclusions of the Hunt Inquiry into Cable Expansion and Broadcasting Policy, the Government decided to proceed with liberalization and two pieces of legislation: the Cable and Broadcasting Act and the Telecommunications Act, were enacted in 1984.

The result was that cable systems were permitted to carry as many new television channels as they liked, as well as providing a telephone service and interactive services of many kinds (as since made familiar by the Internet). To maintain the momentum of the perceived commercial interest in this new investment opportunity, in 1983, the Government itself granted eleven interim franchises for new broadband systems each covering a community of up to around 100,000 homes, but the competitive franchising process was otherwise left to the new regulatory body, the Cable Authority, which took on its powers from January 1, 1985.

The franchising process proceeded steadily, but the actual construction of new systems was slow, as doubts about an adequate payback from the substantial investment persisted. By the end of 1990 almost 15 million homes had been included in franchised areas, but only 828,000 of these had been passed by broadband cable and only 149,000 were actually subscribing.^[8] Thereafter, however, construction accelerated and take-up steadily improved.

The first new television channels launched for carriage on cable systems (going live in March 1984) were Sky Channel, Screensport, Music Box and TEN - The Movie Channel. Others followed, some were merged or closed down, but the range expanded. A similar flux was seen among the operators of cable systems: franchises were granted to a host of different companies, but a process of consolidation saw the growth of large multiple system operators, until by the early 2000s, virtually the whole industry was in the hands of two companies, NTL and Telewest.

In 2005, it was announced that NTL and Telewest would merge, after a period of co-operation in the preceding few years. This merger was completed on March 3, 2006, with the company being named ntl Incorporated. For the time being, the two brand names and services were marketed separately. However, following NTL's acquisition by Virgin Mobile, the NTL and Telewest services were rebranded Virgin Media on February 8, 2007, creating a single cable operator covering more than 95% of the UK cable market.^{[citation needed]}

There are a small number of other surviving cable television companies in the UK outside of NTL including WightCable (Isle of Wight) and Smallworld (Ayrshire, Carlisle and Lancashire).

Cable TV faces intense competition from British Sky Broadcasting's Sky satellite television service. Most channels are carried on both platforms. However, cable often lacks "interactive" features (e.g. text services, and extra video-screens), especially on BSkyB owned channels, and the satellite platform lacks services requiring high degrees of two-way communication, such as true video on demand.

However, subscription-funded digital terrestrial television (DTT) proved less of a competitive threat. The first system, ITV Digital, went into liquidation in 2002. Top Up TV later replaced it; however, this service is shrinking^{[citation needed]} as the DVB-T multiplex owners are finding free-to-air broadcasting more profitable.^{[citation needed]}

Another potential source of competition in the future will be TV over broadband internet connections; this is known as Internet Protocol television (IPTV). Some IPTV services are currently available in London, while services operated in Hull ceased in April 2006.^{[citation needed]} As the speed and availability of broadband connections increase, more TV content can be delivered using protocols such as IPTV. However, its impact on the market is yet to be measured, as is consumer attitude toward watching TV programs on personal computer instead of television sets. At the end of 2006, BT (the UK's former state owned monopoly phone company) started offering BT Vision, which combines the digital free-to-air standard Freeview through an aerial, and on-demand IPTV, delivered over a BT Broadband connection through the Vision set-top box (BT have chosen to deploy Microsoft's Mediaroom platform for this.)^{[citation needed]}

North America[link]

Canada[link]

In 1949, Broadcast Relay Service began negotiations for the implementation of what was to be the first large scale cable TV system in North America. The development of the system relied on reaching agreement with Quebec Hydro-Electric Commission to utilise their existing network of power poles supplying power to the Montreal Metro area. Initial discussions began with a meeting with Montreal City Council on June 21, 1949. After many months of negotiation, agreement was reached between Hydro Quebec and Rediffusion on February 28, 1950 for an initial 5 year period. The Rediffusion cable system was operational in 1952 and eventually supplied 80,000 homes in Montreal Quebec. Cable television in Canada began in 1952 with community antenna connections in Vancouver and London, Ontario; which city is first is not clear. Initially, the systems brought American stations to viewers in Canada who had no Canadian stations to watch; broadcast television, though begun late in 1952 in Toronto and Montreal, did not reach a majority of cities until 1954.

In time, cable television was widely established to carry available Canadian stations as well as import American stations, which constituted the vast majority of signals on systems (usually only one or two Canadian stations, while some systems had duplicate or even triplicate coverage of American networks). During the 1970s, a growing number of Canadian stations pushed American channels off the systems, forcing several to expand beyond the original 12-channel system configurations. At the same time, the advent of fibre-optic technology enabled companies to extend their systems to nearby towns and villages that by themselves were not viable cable television markets.

United States[link]

Cable television in the United States is a common form of television delivery, generally by subscription. Cable television first became available in the United States in 1948, with subscription services in 1949. Data by SNL Kagan shows that as of 2006 about 58.4% of all American homes subscribe to basic cable television services. Most cable viewers in the US are in the suburbs and tend to be middle class;^[9] cable television is less common in low income, inner city, and rural areas.^[9]

Cable television franchise fees stems from a community's basic right to charge for use of the property it owns. The cable television franchise fees represent part of the compensation a community receives in exchange for the cable operator's occupation and the right-of-way use of Public property. A franchise fee is not a tax; it is a rental charge.

Other cable-based services[link]

Coaxial cables are capable of bi-directional carriage of signals as well as the transmission of large amounts of data. Cable television signals use only a portion of the bandwidth available over coaxial lines. This leaves plenty of space available for other digital services such as cable internet, cable telephony and wireless services, using both unlicensed and licensed spectrum.

Broadband Internet is achieved over coaxial cable by using cable modems to convert the network data into a type of digital signal that can be transferred over coaxial cable. One problem with some cable systems is the older amplifiers placed along the cable routes are unidirectional thus in order to allow for uploading of data the customer would need to use an analog telephone modem to provide for the upstream connection. This limited the upstream speed to 31.2k and prevented the always-on convenience broadband internet typically provides. Many large cable systems have upgraded or are upgrading their equipment to allow for bi-directional signals, thus allowing for greater upload speed and always-on convenience, though these upgrades are expensive.

In North America, Australia and Europe many cable operators have already introduced cable telephone service, which operates just like existing fixed line operators. This service involves installing a special telephone interface at the customer's premises that converts the analog signals from the customer's in-home wiring into a digital signal, which is then sent on the local loop (replacing the analog last mile, or Plain old telephone service (POTS)) to the company's switching center, where it is connected to the Public switched telephone network (PSTN). The biggest obstacle to cable telephone service is the need for nearly 100% reliable service for emergency calls. One of the standards available for digital cable telephony, PacketCable, seems to be the most promising and able to work with the Quality of Service (QOS) demands of traditional analog Plain old telephone service (POTS) service. The biggest advantage to digital cable telephone service is similar to the advantage of digital cable TV, namely that data can be compressed, resulting in much less bandwidth used than a dedicated analog circuit-switched service. Other advantages include better voice quality and integration to a Voice over Internet Protocol (VoIP) network providing cheap or unlimited nationwide and international calling. Note that in many cases, digital cable telephone service is separate from cable modem service being offered by many cable companies and does not rely on Internet Protocol (IP) traffic or the Internet.

Beginning in 2004 in the United States, the traditional cable television providers and traditional telecommunication companies increasingly compete in providing voice, video and data services to residences. The combination of TV, telephone and Internet access is commonly called triple play regardless of whether CATV or telcos offer it.

More recently, several US cable operators have begun offering wireless services to their subscribers. Most notably was the September 2008 launch of Optimum Wi-Fi by Cablevision. This service is made available, at no additional cost, to Optimum Broadband subscribers, and is available at over 14,000 locations across Long Island, NY, parts of NJ and CT. Cablevision has reported a double digit reduction in subscriber churn since launching Optimum Wi-Fi, even as Verizon has rolled out FiOS, a competitive residential broadband service in the Cablevision footprint. Other Tier 1 cable operators, including Comcast, have announced trials of a similar service in sections of the US Northeast.

History and beginnings of Cable TV-originated live programs[link]

During the 1980s, mandated regulations not unlike Public, educational, and government access (PEG) channels created the beginning of the Cable-originated live television program that evolved into what we know today in 2012 where many cable networks provide live cable-only broadcasts of many varieties, cable-only produced television movies, and miniseries. Various live local programs with local interests were rapidly being created all over the United States in most major television markets in the early 1980s. One of the first was with the local ATC broadcasting station in Columbus, Ohio, the company being based in Colorado at the time, where, in 1982, at the age of 16, while still in high school, Richard Sillman was one of if not the youngest Cable TV Director in the US of these live on-air Cable TV programs.

With the development of the internet, by the late 1990s and early 2000, much of that regulation had been replaced where newer industry technologies developed, offering viewers alternate choices for local events and programming leading to what is today, that being Digital Cable, Internet, and Phone being offered to consumers, bundled, by 2010.

See also[link]

• AllVid
• Broadband
• CableCARD
• Digital cable
• Digital television
• DVB-C
• Multichannel video programming distributor
• North American cable television frequencies
• Private Cable Operator
• QAM Tuner
• Satellite television
• Tru2way

References[link]

• The history of Rediffusion by Gerald K Clode

Further reading[link]

• Eisenmann, Thomas R., "Cable TV: From Community Antennas to Wired Cities", Harvard Business School Weekly Newsletter, July 10, 2000
• Moss, Mitchell L.; Payne, Frances, "Can Cable Keep Its Promise?", New York Affairs, Volume 6, Number 4. New York University. 1981
• Smith, Ralph Lee, "The Wired Nation", The Nation magazine, May 18, 1970
• Smith, Ralph Lee, The Wired Nation; Cable TV: the electronic communications highway. New York, Harper & Row, 1972. ISBN 0-06-090243-4

External links[link]

• Cable Television at the Open Directory Project

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